Home / 20,219.79-30,328.19-7,740.93

Finding the Fourth Proportional to 20,219.79, 30,328.19 and 7,740.93

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Solution

The fourth proportional to 20,219.79, 30,328.19 and 7,740.93 is: 11,610.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.79 : 30,328.19 = 7,740.93 : x
  2. Step 2: Convert to fraction form
    20,219.79/30,328.19 = 7,740.93/x
  3. Step 3: Cross multiply
    20,219.79x = 30,328.19 × 7,740.93
  4. Step 4: Simplify right side
    20,219.79x = 234,768,357.11
  5. Step 5: Solve for x
    x = 234,768,357.11/20,219.79
  6. Step 6: Final answer
    x = 11,610.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.